Rendering a long scene in pieces?
Yes, you can. Make the output file with a '.png' extension (or any other image extension) and start rendering the animation. It will render each frame as a picture and you can stop and continue it whenever you want, starting from whichever frame you want. At the end, when it's all done, just add them all in blender's video editor or in a separate video editing software and the rest is easy.

Here's a video tutorial from Blender Guru:
https://m.youtube.com/watch?v=dd5RT8rEPqU